linux-kernel - Re: [PATCH RESEND] atl1: fix 4G memory corruption bug

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Message-ID: <4835E39E.90801@garzik.org>
Date:	Thu, 22 May 2008 17:20:30 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	Alexey Dobriyan <adobriyan@...il.com>
CC:	csnook@...hat.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Jay Cliburn <jacliburn@...lsouth.net>, stable@...nel.org
Subject: Re: [PATCH RESEND] atl1: fix 4G memory corruption bug

Alexey Dobriyan wrote:
> From: Alexey Dobriyan <adobriyan@...il.com>
> 
> When using 4+ GB RAM and SWIOTLB is active, the driver corrupts
> memory by writing an skb after the relevant DMA page has been
> unmapped.  Although this doesn't happen when *not* using bounce
> buffers, clearing the pointer to the DMA page after unmapping
> it fixes the problem.
> 
> http://marc.info/?t=120861317000005&r=2&w=2
> 
> 
> Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
> Signed-off-by: Jay Cliburn <jacliburn@...lsouth.net>
> ---
> 
>  drivers/net/atlx/atl1.c |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)

applied


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